Tcl/Tk 9.1 Released
Latest Release: Tcl/Tk 9.1.0 (Sep 29, 2026) Tcl/Tk 9.1.0 is the current development work on Tcl and Tk, aiming toward stable releases in September 2026. They add new features and interfaces to the foundation of Tcl/Tk 9.0. Many C99 math routines now available as expr functions.
- ▪Latest Release: Tcl/Tk 9.1.0 (Sep 29, 2026) Tcl/Tk 9.1.0 is the current development work on Tcl and Tk, aiming toward stable releases in September 2026.
- ▪They add new features and interfaces to the foundation of Tcl/Tk 9.0.
- ▪Many C99 math routines now available as expr functions.
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| Original publisher | Tcl-lang |
| Canonical URL | https://www.tcl-lang.org/software/tcltk/9.1.html |
| Publication time | Tue, 29 Sep 2026 17:13:38 +0000 |
| Retrieval time | 2026-09-29T17:32:04.214Z |
| Last seen | 2026-09-29T17:32:04.214Z |
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| Commercial reuse | May the content be reused commercially? | Not permitted |
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Latest Release: Tcl/Tk 9.1.0 (Sep 29, 2026) Tcl/Tk 9.1.0 is the current development work on Tcl and Tk, aiming toward stable releases in September 2026. They add new features and interfaces to the foundation of Tcl/Tk 9.0. Download Tcl/Tk 9.1.0 Source Releases Highlights of Tcl 9.1 New command unicode: Unicode normalization New C routines Tcl_UtfToNormalized*: Unicode normalization New command timer: monotonic clock; microsecond resolution New command lfilter: select items from list New command interp set: variable access in child interpreter New subst options: -backslashes, -commands, -variables. New switch options: -integer. Many C99 math routines now available as expr functions. Applications now required to call an initialization routine, either Tcl_FindExecutable or TclZipfs_AppHook.
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